/**
 * Enjoy programming!!!
 * Time:  2021/10/24 -  23:37
 */
public class Array00 {
    public static void main(String[] args) {
        if (args.length == 0 || args[0].equals("-h")) {
            System.out.print("Hello,");
        } else if (args[0].equals("-g")) {
            System.out.print("Goodbye,");
        }
        for (int i = 1; i < args.length; i++) {
            System.out.print(" " + args[i]);
        }
        System.out.println("!");

    }
}

